file = open("data/data07_05.txt","r",-1,"utf-16")
line = file.readline(6) #读取6个字节
print(line)
line = file.readline() #读取改行剩余的内容
#去除了这行文本的最后一个字符（换行符）后剩下的部分
print(line[:-1])
line = file.readline(5) #读取5个字节
print(line)
line = file.readline()
print(line)
file.close()